Isaac g



Patented Julyla, 1882.4

(NoMolel.)l

l '1.' G.BOWER.

KNIFE OUPLINYG FOR MOWING MACHINES. 19,261,299l

INVENTOR.

K Td uw f "WITNBSSB Lgf Y I ATTORNYS.

l UNITED y STATES PATENT OFFICE.

IsAAe e. Bowne, 0E EREMONT, "OHIO, AssIeNoE 0E ONEHALE To BYRON E.DUnRow, on sAME PLACE.

KNIFE-COUPLING- FOR MOWING-MACHINES.

y SPECIFICATION, forming part of Letters Patent No.`261,299, dated VJuly18, 1882.

Application led April 13, 1882. (No model.)

To all whom it may concern:

Beit known vthat I, IsAAc G. BowER, of Fremont, in the county ofSandusky and State of Ohio, have invented certain new and usefulImprovements in Knife-Couplin gs for Mowin g- Machines, te.; and I dohereby declare that the followin gis a full, clear, and exactdescription of the invention, which will'enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, which form a lpart of this specilication,and in' which- Figure l is a perspective view of my improved couplingdevice with one end of the pitman broken off. Fig. 2 is a longitudinalsectional view of the pitman, pitman-socket, and coupling-box with itsadjuncts. Fig. 3 is a cross-section through the coupling-box on line wrc, Fig. 2. Fig. 4 is a detail view ofthe inner side of the adjustablecoupling-box, and Fig. 5 is a perspective detail view ofthe end of theknife-bar plate with its detachable knuckle and knuckle-plate.

Similar letters of reference indicate corresponding parts in all thefigures.

My invention has rela-tion to the coupling or joint by which theknife-bar or sickle-bar is connected to the pitman of harvesters orreapingmachines 5 anditconsists in an improved construction andcombination of Aparts of the same, as hereinafter more fully describedand claimed, which has forits object to take up all slack or lost motioncaused by wear, and to so construct and arrange the wearing parts thatthey may be readily removed and others substituted for them whenrequired.

In the accompanying drawings, A represents one end ot' the pitman, whichis screwed into a threaded socket, B, into the other end of which isinserted a screw, G, having a square head, C', having holes or recessesc, so

that it may be turned to either side by insert-VV ing a punch or othersuitable tool into any one of the openings c and working it as a key orlever. The pitman is prevented from working loose in the threaded socketB by a jam-nut, c.

The couplingbox consists essentially of two parts-viz., a fixed part, D,which forms an ex'- tension of the socket B, and a detachable andadjustable part, E. The former has a step or projecting shoulder, d, onits inner side or face,

through which is a bolt-hole, e. At its enlarged outer end is an oblongslot,f, and a projecting semi-cylindrical cap or hood, D', which iscorrugated on its inside to t the corrugated knuckle F. The detachableand adjustable part E has a corresponding cap, E', and a longitudinalrecess, g, which is adapted to fit over and rideupon the raised step orshoulder d oi'part D. Through this recess is 6o cut a slot or oblon gopening, h, to permit play ofthe part E upon the bolt G, which isinserted through the bolt-hole e in part D, a washerplate, H, beinginterposed between part E and the bolt-nut G'. This plate H, it will beob- 65 served, is reduced in width at its free end. where it is bent toform a step or offset, i, and projecting part or lip H', which extendsbetweenlugs 7c lc upon part Eout over the squared head of screw (l,which it overlaps, plate H H' 7o being kept in place and preventedfrommoving sidewise by the lugs or projections 7c k.

I is the flan ged plate, which is riveted to the knife-bar orsickle-bar, to which a reciprocating motion is imparted by the pitman A.The head I' ot' plate I is recessed or cut out to receive theknuckle-plate J, which has the-projecting corrugated knuckle F. Theknuckle, with its plate, is held'iirmly in place in the recessed head l'by a screw or bolt, L, the head 8o of which projects into the slot f ofpart D. By withdrawing this bolt plate J, with its knuckle, may readilybe removed.

From-the foregoing description', taken in connection with the drawings,the operation of this device will readily be understood. To take upslack or lost motion caused by wear of the knuckle and its hood D'E',the bolt-nut G' is loosened suiiciently to loosen plate H, so thatitslip H' may be swung to one side out 9o of the way of the squaredscrew-head O. By turning the latter in the manner described it will workagainst the end ot the sliding box E E' and push this up against theknuckle F. When in its proper position it is fixed in pla-ce 9 5 byagain tightening down nut G', plate H H' having first been slppedintoits place between the studs k 7c, overlapping head C', against which itoperates as a nut-lock bypreventing it from turning. Part E E' is guidedin its adroo justment by the step d ou part D, so that it will alwaysmove in a true line, and thus also prevent lateral play or motion of thepart E upon its seat on D.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States- 1. The combination of the pitnianA, thread ed socket B, having fixed coupling-box D D', adjustablesliding box E E', adjusting-screw C, having square head C', bolt G, nutG', and plate H H', constructed and combined substantially in the mannerand for the purpose herein shown and set forth.

2. The combination of the flanged plate I, having recessed head I',plate J, having the corrugated knuckle F, and bolt or screw L,substantially as and for the purpose herein shown and described.

3. The coupling-box composed of the following parts: fixed part D,having the cap or hood D', step d, bolthole e, and slot or aperturef,adjustable and detachable part E, having the cap or hood E', recess g,sloth, and lugs 7c lc, nutted bolt G G', plate H, having the lip orextension H', screw C, having square head U', and threaded socket B, allconstructed and combined substantially as and for the purpose hereinshown and specified.

In testimony that I claim the foregoing as my own I have hereunto aixedmy signature in presence of two witnesses.

ISAAC G. BOWER.

Witnesses WM. HocKE, PETER BURRoUGHs.

